Sontay GL-CO-RFG65 Series User manual

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Gas Leak Alarm Systems
Page 1 of 5
GL-CO-RFG65x
Issue: 5.4
Date Of Issue: 28/10/2008
© 2008 Sontay Limited. All rights reserved.
Features
Specification Product Codes
• Remote sensors for Natural Gas, LPG or CO
• Audio & visual alarms
• Adjustable alarm threshold
• Self-diagnosis fault system
• 2 x SPST relay outputs
• DIN rail, panel or wall mounting
Power supply:
230Vac ±10% @ 50/60Hz
12V ±10%
Power consumption 7VA
Radio disturbance VDE0875/0871
Vibration test with 2g (DIN 40046)
Relay outputs 2 x SPDT, 250V @ 5 (1) A
Housing dimensions 105 x 115 x 70mm
Housing materials:
Cover ABS
Base Nylon
Housing protection IP40
Panel mount housing dim.142 x 142 x 125mm
Sensor dimensions 77 x 77 x 44
Sensor material Nylon
Sensor protection IP44
Ambient:
Storage temp. -25 to + 60°C
Operating temp.0 to 45°C
RH Class F Din 40040
Country of origin Italy
GL-CO-RFG651
1 Channel gas leak alarm system (DIN rail mount)
GL-CO-RFG652
2 Channel gas leak alarm system (DIN rail mount)
GL-CO-RFG653
3 Channel gas leak alarm system (DIN rail mount)
GL-CO-WMK6
Wall mounting kit
GL-CO-FMK6
Panel mounting kit
GL-CO-SRS150
Natural gas sensor
GL-CO-SRS250
LPG, Propane sensor
GL-CO-SRS350
Carbon Monoxide sensor

Page 2 of 5
UK Sales Tel: [phone] International Tel: [phone]
GL-CO-RFG65x
Issue: 5.4
Date Of Issue: 28/10/2008
© 2008 Sontay Limited. All rights reserved.
Technical Overview Links
The CL-CO-RFG65x is a series of gas leak alarm systems,
that are designed for the detection of gas leaks in spaces
such as boiler plant rooms, workshops and other industrial
gas installations, to provide safety alarm and shutdown
facilities on detection of gas leakage. 1, 2 or 3 channel ver-
sions are available.
Installation
1. The GL-CO-RFG65x should only be installed by a compe-
tent, suitably trained technician, experienced in installa-
tion with hazardous voltages. (>50Vac & <1000Vac or
>75Vdc & 1500Vdc)
2. Ensure that all power is disconnected before carrying out
any work on the GL-CO-RFG365x.
3. Maximum cable is 2.5mm², care must be taken not to
over tighten terminals.
4. Separate the base from the cover.
5. If DIN rail mounting clip onto the DIN rail.
6. Make connections as required (see page 4 & 5 for
examples) and links as appropriate (see below). NB It is
advised that no more than 2 cables be inserted into a
single terminal. Use external junction boxes if necessary.
7. Replace the cover on the base using the 4 screws pro-
vided, if panel mounting fix to panel door, using the
panel mounting kit.
Panel Mount Cut-Out
Panel cutout: 138 x 138 ±0.5%
Link Functions:
M - F1
No link = Internal buzzer enabled
Linked = Internal buzzer disabled
F2 - F3
No link = Relay normally energised when no gas present
Linked = Relay normally de-energised when no gas present
F3 - F4
No link = Relay with latching alarm
Linked = Relay with non-latching alarm
B2 - H2
Linked = B2 sensor not connected
B3 - H3
Linked = B3 sensor not connected
Operational Relay Output:
When in alarm:
F2 - F3 linked 1 - 3 closes, 2 - 3 opens
F2 - F3 unlinked 1 - 3 opens, 2 - 3 closes
Latching alarm and Reset:
F3 - F4 linked:
Alarm ceases when the gas concentration falls below the
threshold level and the ALARM LED blinks slowly. Press the
RESET button to clear the LED status.
F3 - F4 unlinked:
Alarm continues even when the gas concentration falls be-
low the threshold level. To deactivate press the RESET but-
ton for at least 5 seconds.
Alarm Levels
Alarm thresholds
Natural gas alarm threshold:
0.5% to 1.25% (0.8% with sensitivity =0)
(5000 to 12,500ppm)
LPG alarm threshold:
0.22% to 0.56% (0.35% with sensitivity =0)
(2200 to 5600ppm)
CO alarm threshold:
0.02% to 0.5% (0.03% with sensitivity =0)
(200 to 500ppm)

Page 3 of 5
UK Sales Tel: [phone] International Tel: [phone]
GL-CO-RFG65x
Issue: 5.4
Date Of Issue: 28/10/2008
© 2008 Sontay Limited. All rights reserved.
Alarm Levels (continued) Self Diagnostics
Pre-Alarm thresholds
Natural gas pre-alarm threshold:
0.3% to 0.8% (0.5% with sensitivity =0)
(3000 to 8000ppm)
LPG pre-alarm threshold:
0.14% to 0.35% (0.22% with sensitivity =0)
(1400 to 3500ppm)
CO pre-alarm threshold:
0.012% to 0.03% (0.019% with sensitivity =0)
(120 to 300ppm)
The alarm threshold for Natural Gas is about 16% of the
LEL. This is below the limit set by the manufacturing stan-
dards (20% LEL). The pre-alarm threshold is about 66.6%
of the alarm threshold. Using the SENSITIVITY pot the
thresholds can be adjusted within the limits established the
manufacturing standards. Turning the pot towards + in-
creases the sensitivity and turning towards - decreases the
sensitivity.
Sensor Location
Natural gas 100 to 500mm from the ceiling
LPG 100 to 500mm from the floor
CO 1.5 to 2m from the floor
It is advisable to position sensors at a certain distance from
gas appliances, so as to avoid nuisance triggering.
Boilers & DHW 1 to 2 meters
Gas cookers 2 to 3 meters
Cable types
Power & relay 1.5mm²
Sensor up to 40m 1.5mm²
Sensor up to 60m 2.5mm²
Operation
When the controller is switched on it remains inactive for 1.5
to 2 minutes with the FAULT and ALARM LEDs flashing, to
allow the sensor to stabilise.
When the gas concentration exceeds the pre-alarm thresh-
old the ALARM LED blinks.
When the gas concentration exceeds the alarm threshold,
after a delay of about 20 seconds:
• The internal buzzer will sound (if enabled)
• The ALARM LED switches ON
• Activates the operational control
Self diagnostics
In the event of a fault or incorrect connection of the sensor
the following LED states will occur:
Commissioning
Apply power to controller - POWER LED lights.
Wait 2 minutes for sensor to stabilise.
Set SENSITIVITY pot to ‘0’
Simulate presence of gas (gas from a lighter should work).
When the alarm threshold is reached, after a 20 second
delay the ALARM LED will light, the buzzer will sound (if
enabled) and the relay operate.
Without latching alarm - buzzer ceases, ALARM LED
blinks slowly
With latching alarm - buzzer continues until RESET button
is pressed for at least 5 seconds.
Gas shut off valve
This must be installed on the gas feed pipe, possibly outside
the space controlled, in a place which is easily accessible
and is protected from bad weather.
NB In LPG installations the valve must be installed down-
stream of the pressure reducing valve.
Type of Fault Fault LED Alarm LED
Sensor self-heating element broken ON OFF
No connection to terminal G ON OFF
No connection to terminal B ON OFF
No connection to terminal M OFF ON
Connections G & B reversed ON OFF
Connections G & M reversed OFF ON
Connections B & M reversed OFF ON

Page 4 of 5
UK Sales Tel: [phone] International Tel: [phone]
GL-CO-RFG65x
Issue: 5.4
Date Of Issue: 28/10/2008
© 2008 Sontay Limited. All rights reserved.
Front Panels Example Connections
1 Sensitivity potentiometer
2 Power supply LED
3 Fault LED
4 Alarm LED
5 Reset button
Dimensions
Basic operation:
GL-CO-RFG652, 230Vac Supply:

Whilst every effort has been made to ensure the accuracy of this specification, Sontay cannot accept responsibility for damage, injury, loss or
expense resulting from errors or omissions. In the interest of technical improvement, this specification may be altered without notice.
Page 5 of 5
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GL-CO-RFG65x
Issue: 5.4
Date Of Issue: 28/10/2008
© 2008 Sontay Limited. All rights reserved.
Example Connections (continued)
GL-CO-RFG653, 230Vac Supply:
GL-CO-RFG653, 12V Supply: